Finding the Third Proportional to 52,017.50 and 78,485.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,017.50 : 78,485.50 = 78,485.50 : x
2. Step 2: Convert to fraction form
   52,017.50/78,485.50 = 78,485.50/x
3. Step 3: Cross multiply
   52,017.50x = 78,485.50 × 78,485.50
4. Step 4: Simplify right side
   52,017.50x = 6,159,973,710.25
5. Step 5: Solve for x
   x = 6,159,973,710.25/52,017.50
6. Step 6: Final answer
   x = 118,421.18